class_docstr: Processes input, possibly statefully.
docstr: Creates copy of current state and clears accumulated state
docstr_tok: ["Creates","copy","of","current","state","and","clears","accumulated","state"]
code: def clear_buffer(self):
      """Creates copy of current state and clears accumulated state"""
      raise NotImplementedError
  
imports: import numpy
label_desc: Use image node_id 4 for calling the Filter obj's underlying member method code with example usage: obj.clear_buffer() without return types